Intel X710 Dual 10G Receive Throughput Limitation During Simultaneous Recording

[Abdul123]

Hi Intel Team,

I am using the Intel Ethernet Network Adapter X710 NIC card with 4x10G Ethernet ports.

Current behavior:

• When I receive and record a single 10G channel, I achieve around 1200 MB/s, which is expected and close to line rate.
• However, when I simultaneously use two 10G channels for receiving and recording, the total throughput reaches only around 1600 MB/s.

Expected behavior:

• Since I am using dual 10G links simultaneously, I expect combined throughput close to 2400–2500 MB/s total.

Environment:

• CentOS 9 Linux
• High-speed Ethernet data receiving and recording
• NVMe SSD storage
• Multi-threaded application

Please suggest:

• Whether this limitation could be related to PCIe bandwidth, NUMA configuration, CPU bottleneck, RSS/queue configuration, memory bandwidth, or driver limitations.
• Recommended driver settings and performance tuning for achieving full dual-port 10G receive throughput.
• Best practices for queue/core mapping and RSS configuration with the Intel X710.

Thanks.

[vish1]

Hello Abdul123,

Greetings!!

We would like to inform you that the Intel Ethernet Network Adapter X710, particularly in configurations such as the Intel Ethernet Network Adapter X710-DA2 and Intel Ethernet Network Adapter X710-DA4, may experience inconsistent throughput when operating with Single Root I/O Virtualization (SR-IOV) interfaces.

In certain environments, especially during throughput testing on OpenStack virtual machines, performance may fluctuate between the maximum theoretical throughput and values as low as 1 Gbps. This behavior can become more noticeable during simultaneous operations and may result in limitations in receive throughput.

For your reference, we have shared a document that provides detailed information on advanced settings and Receive Side Scaling (RSS) for Intel® Network Adapters. These configurations may help in optimizing performance and improving consistency.

https://www.intel.com/content/www/us/en/support/articles/000005593/ethernet-products.html

https://www.intel.com/content/www/us/en/support/articles/000006703/ethernet-products.html

Please review the attached document and let us know if you require any further assistance.

Best Regards,

Vishal Shet P

Intel Customer Support Technician

[vish1]

Hello Abdul123,

Greetings!!

We are following up on your case and wanted to check if you had a chance to review our previous email.

Please let us know if you need any further clarification or assistance. We look forward to your update.

Best Regards,

Vishal Shet P

Intel Customer Support Technician